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catagenesis

From Wiktionary, the free dictionary

English

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English Wikipedia has an article on:
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Etymology

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From cata- +‎ -genesis.

Noun

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catagenesis (uncountable)

  1. (geology) The cracking process in which organic kerogens are broken down into hydrocarbons.
  2. (biology) Retrogressive evolution, as contrasted with anagenesis.